Patents by Inventor William Z. Penland

William Z. Penland has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4690131
    Abstract: An improved device of a combination of elements is adapted to be used with an elongated flexible instrument, such as an endoscope, and capable of at least partially extending with the instrument into the lumen of a tubular body part, such as the large intestines. A sheath is adapted to be mounted on the instrument. The instrument and sheath are provided with selectively inflatable cuffs movable with respect to one another by axially sliding the sheath on the instrument. The movable relationship of the sheath and instrument and the selective control of air to the cuffs allows the user to more easily navigate the front of the instrument through the lumen of the body part with less discomfort to the patient.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: September 1, 1987
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: James E. Lyddy, Jr., William Z. Penland, Paul H. Sugarbaker
  • Patent number: 3955755
    Abstract: A blood separation centrifuge rotor having a generally parabolic core disposed concentrically and spaced apart within a housing having a similarly shaped cavity. Blood is introduced through a central inlet and into a central passageway enlarged downwardly to decrease the velocity of the entrant blood. Septa are disposed inside the central passageway to induce rotation of the entrant blood. A separation chamber is defined between the core and the housing wherein the whole blood is separated into red cell, white cell, and plasma zones. The zones are separated by annular splitter blades disposed within the separation chamber. The separated components are continuously removed through conduits communicating through a face seal to the outside of the rotor.
    Type: Grant
    Filed: April 25, 1975
    Date of Patent: May 11, 1976
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: Julian P. Breillatt, Jr., Carl J. Remenyik, Walter K. Sartory, Louis H. Thacker, William Z. Penland
  • Patent number: D266866
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: November 9, 1982
    Inventor: William Z. Penland